Income Taxes (Details) - USD ($) $ in Millions	3 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Sep. 30, 2022
Income Tax Disclosure [Abstract]
Income tax expense	$ 7.1	$ 13.0
Effective Income Tax Rate Reconciliation, Percent	25.40%	24.30%
Deferred Income Tax Liabilities, Net of Deferred Income Tax Assets	$ (33.7)		$ (35.9)
Deferred Tax Assets, Valuation Allowance	1.0		1.0
Deferred tax liability, net	$ (34.7)		$ (36.9)